The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Oct. 04, 1988

Filed:

Jun. 19, 1987
Applicant:
Inventor:

Kevin P Staggs, Glendale, AZ (US);

Assignee:

Honeywell Inc., Minneapolis, MN (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G09G / ;
U.S. Cl.
CPC ...
340715 ; 340703 ; 340747 ; 371 25 ;
Abstract

On-line verification apparatus of a display generation system comprises a memory which has a display portion and an inactive display portion, the display portion storing display information, and the inactive display portion storing test data. Scan logic controls a monitor, the scan logic accessing the memory at a predetermined location corresponding to the position control signals. A generator generates display control information to provide information control signals to the scan beam thereby providing the visual display corresponding to the display information stored in the display portion of the memory. A register stores display control information generated from the test data stored in the inactive display portion of the memory during a retrace period. The display control information stored in the register corresponding to the test data is compared to an expected result, during the retrace period, thereby verifying on-line that the display generation system is functioning correctly.


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